CN102888827A - Protection method and device of water conservancy electric gate valve - Google Patents
Protection method and device of water conservancy electric gate valve Download PDFInfo
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- CN102888827A CN102888827A CN2012104354256A CN201210435425A CN102888827A CN 102888827 A CN102888827 A CN 102888827A CN 2012104354256 A CN2012104354256 A CN 2012104354256A CN 201210435425 A CN201210435425 A CN 201210435425A CN 102888827 A CN102888827 A CN 102888827A
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Abstract
The invention relates to a protection method and a protection device of a water conservancy electric gate valve and belongs to the control field of water conservancy equipment. The technical scheme is as follows: the protection device comprises an operation power supply, an electric gate valve (1) and a gate valve control box (2), wherein the gate valve control box comprises a gate valve controller (3) and a current detection circuit (4); the current detection circuit is used for detecting operation current of a motor of the electric gate valve to provide a current signal for the gate valve controller; the gate valve controller controls the operation of the electric gate valve; the gate valve controller is used for processing the current signal provided by the current detection circuit; and the gate valve controller is used for determining whether to start a protection function or not through detecting and judging the size of a load current changing rate and lasting time. The protection device has the advantages that the protection device can be used for the water conservancy electric gate valves with any size and any type; no matter whether the electric gate valve is hoisted or descended, whether the electric gate valve is operated normally or not can be accurately judged, so that the electric gate valve can be reliably protected and equipment is prevented from being damaged when the electric gate valve is operated abnormally; and therefore, the maintenance amount is reduced and the reliability for operating the electric gate valve is greatly improved.
Description
Technical field
The present invention relates to a kind of guard method and device of water conservancy electric gate valve, belong to the water conservancy equipment control field.
Background technology
At present, in the water conservancy industry, the overload protection of electric gate valve adopts dual mode usually, loading measurement and motor overload protection, and when the load of the electric current of electric gate valve motor or electric gate valve wire rope surpasses setting value, the protection mechanism action.Reason owing to the electric gate valve own wt; the load of electric gate valve motor is different when rising with decline; load when two kinds of protected modes all can not rise or descend electric gate valve is distinguished; thereby can't realize the accurate protection when electric gate valve transshipped; such as being blocked by slide rail in the running; or the device damage that may cause when being blocked by the object of being brought such as timber, perplex for a long time administrative department.
Summary of the invention
The object of the invention provides a kind of guard method and device of water conservancy electric gate valve, realizes no matter how many electric gate valves conducts oneself with dignity, and no matter rises or descends, and can realize the accurate protection to electric gate valve when fault, solves the problems referred to above that exist in the background technology.
Technical scheme of the present invention is:
A kind of guard method of water conservancy electric gate valve comprises following steps:
1. electric gate valve is controlled by gate control box, and gate control box connects operation power supply and electric gate valve, includes gate controller and current detection circuit in gate control box; The operation of gate controller control electric gate valve, current detection circuit detects the running current of electric gate valve motor, provides current signal to gate controller;
2. gate controller is processed the current signal that current detection circuit provides, and gate controller is by detecting and judge size and the duration of load current rate of change, whether determines the starting protection function;
3. the load current rate of change when electric gate valve surpasses predetermined numerical value, and continues to surpass the scheduled time, and gate controller stops the work of electric gate valve automatically, realizes accurately protection.
Described gate controller is at first judged the current signal that current detection circuit provides, if starting current and normal running current, defencive function can not move in both cases.
Main points of the present invention are: defencive function only works when load current changes, and namely only has the load current rate of change to surpass predetermined value and continue and surpasses the scheduled time, and defencive function just can work, and therefore can realize accurate protection; Because only consider the load current rate of change of electric gate valve operation, and do not consider the size of electric current itself, therefore defencive function of the present invention is applicable to the gate of arbitrary size.
Protection philosophy:
Electric gate valve generally adopts AC asynchronous motor, and the in short-term starting current of AC asynchronous motor about 7 times of rated current normally, and electric gate valve is when normally moving, because the own wt of electric gate valve, running current difference when electric gate valve rises and descends is very large, what therefore, gate controller of the present invention detected is not the size of electric current; When electric gate valve normally moved, because load is constant, the gate hoist electric current of electric gate valve was a stationary value that rate of change is very little, and gate controller is judged starting current and normal running current, and defencive function can not move in both cases.When the electric gate valve abnormal running, as have object such as trees under floating to stop under Ka Zha, gate inclination, the single-ended disconnected rope of two suspension centre, the lock, during the situation such as protection switch is malfunctioning up and down, because the unexpected variation of gate hoist load can cause the unexpected variation of electric gate valve motor current; Defencive function only works when load current changes, and namely only has the load current rate of change to surpass predetermined value and continue and surpasses the scheduled time, and defencive function just can work, and therefore can realize accurate protection.No matter electric gate valve rises or descends, and the size of running current (electric current is large when rising owing to electric gate valve deadweight reason, and electric current is little during decline) is not the factor that the present invention protects, and does not therefore consider the maximum value of electric current or load.
Gate controller of the present invention can be identified starting current automatically, avoids the defencive function misoperation, and original gate hoist operating function is had no effect.
A kind of protective device of water conservancy electric gate valve comprises operation power supply, electric gate valve and gate control box; Gate control box comprises gate controller and current detection circuit, the input of current detection circuit connects electric gate valve and operation power supply, the output of current detection circuit connects gate controller, current detection circuit detects the running current of electric gate valve motor, provide current signal to gate controller, the operation of gate controller control electric gate valve; Gate controller is processed the current signal that current detection circuit provides, and gate controller is by detecting and judge size and the duration of load current rate of change, whether determines the starting protection function.
Electric gate valve and current detection circuit are known technology contents.
Beneficial effect of the present invention: use the present invention can make electric gate valve move more reliable, safety; The present invention can be used for the water conservancy electric gate valve of arbitrary size, any type; no matter electric gate valve rises or descends can be judged accurately whether the electric gate valve operation is normal; the reliably protecting electric gate valve; device damage when preventing the electric gate valve operation exception; thereby the reduction maintenance, the reliability when greatly improving the electric gate valve operation.
Description of drawings
Accompanying drawing 1 is embodiment of the invention schematic diagram;
Among the figure: electric gate valve 1, gate control box 2, gate controller 3, current detection circuit 4.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described by embodiment.
A kind of guard method of water conservancy electric gate valve comprises following steps:
1. electric gate valve is controlled by gate control box, and gate control box connects operation power supply and electric gate valve, includes gate controller and current detection circuit in gate control box; The operation of gate controller control electric gate valve, current detection circuit detects the running current of electric gate valve motor, provides current signal to gate controller;
2. gate controller is processed the current signal that current detection circuit provides, and gate controller is by detecting and judge size and the duration of load current rate of change, whether determines the starting protection function;
3. the load current rate of change when electric gate valve surpasses predetermined numerical value, and continues to surpass the scheduled time, and gate controller stops the work of electric gate valve automatically, realizes accurately protection.
Described gate controller is at first judged the current signal that current detection circuit provides, if starting current and normal running current, defencive function can not move in both cases.
In an embodiment, the predetermined value of current changing rate is 30%, predetermined time scope be 2 seconds; When the load current rate of change of electric gate valve surpasses predetermined value, and continue to surpass predetermined time, gate controller stops the work of electric gate valve automatically, realizes accurately protection.
A kind of protective device of water conservancy electric gate valve comprises operation power supply, electric gate valve 1 and gate control box 2; Gate control box comprises gate controller 3 and current detection circuit 4, the input of current detection circuit connects electric gate valve and operation power supply, the output of current detection circuit connects gate controller, current detection circuit detects the running current of electric gate valve motor, provide current signal to gate controller, the operation of gate controller control electric gate valve; Gate controller is processed the current signal that current detection circuit provides, and gate controller is by detecting and judge size and the duration of load current rate of change, whether determines the starting protection function.
Claims (5)
1. the guard method of a water conservancy electric gate valve is characterized in that, comprises following steps:
1. electric gate valve is controlled by gate control box, and gate control box connects operation power supply and electric gate valve, includes gate controller and current detection circuit in gate control box; The operation of gate controller control electric gate valve, current detection circuit detects the running current of electric gate valve motor, provides current signal to gate controller;
2. gate controller is processed the current signal that current detection circuit provides, and gate controller is by detecting and judge size and the duration of load current rate of change, whether determines the starting protection function;
3. the load current rate of change when electric gate valve surpasses predetermined numerical value, and continues to surpass the scheduled time, and gate controller stops the work of electric gate valve automatically, realizes accurately protection.
2. the according to claim 1 guard method of described a kind of water conservancy electric gate valve; it is characterized in that described gate controller; the current signal that at first current detection circuit is provided judges, if starting current and normal running current, defencive function can not move in both cases.
3. the according to claim 1 and 2 guard method of described a kind of water conservancy electric gate valve is characterized in that the predetermined value of current changing rate can be set, as is 30%, predetermined time scope can set, as be 2 seconds; When the load current rate of change of electric gate valve surpasses predetermined value, and continue to surpass predetermined time, gate controller stops the work of electric gate valve automatically, realizes accurately protection.
4. the according to claim 3 guard method of described a kind of water conservancy electric gate valve, the predetermined value that it is characterized in that current changing rate is 30%, predetermined time scope be 2 seconds.
5. the protective device of a water conservancy electric gate valve is characterized in that comprising operation power supply, electric gate valve (1) and gate control box (2); Gate control box comprises gate controller (3) and current detection circuit (4), the input of current detection circuit connects electric gate valve and operation power supply, the output of current detection circuit connects gate controller, current detection circuit detects the running current of electric gate valve motor, provide current signal to gate controller, the operation of gate controller control electric gate valve; Gate controller is processed the current signal that current detection circuit provides, and gate controller is by detecting and judge size and the duration of load current rate of change, whether determines the starting protection function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104354256A CN102888827A (en) | 2012-11-05 | 2012-11-05 | Protection method and device of water conservancy electric gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104354256A CN102888827A (en) | 2012-11-05 | 2012-11-05 | Protection method and device of water conservancy electric gate valve |
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| Publication Number | Publication Date |
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| CN102888827A true CN102888827A (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012104354256A Pending CN102888827A (en) | 2012-11-05 | 2012-11-05 | Protection method and device of water conservancy electric gate valve |
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| Country | Link |
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| CN (1) | CN102888827A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635571A (en) * | 2014-12-09 | 2015-05-20 | 合肥三立自动化工程有限公司 | Remote gate control system and remote gate control method |
| CN105442500A (en) * | 2015-11-06 | 2016-03-30 | 三峡大学 | Inflatable type hydropower station ecological tail gate and operation method |
| CN107677909A (en) * | 2017-10-27 | 2018-02-09 | 武汉圣禹排水***有限公司 | Current limliting gate and sewage treatment well and detecting method with fault detection system |
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| CN1059429A (en) * | 1990-08-30 | 1992-03-11 | 西屋电气公司 | Overcurrent trip circuit |
| JP2004218409A (en) * | 2003-01-16 | 2004-08-05 | Tohoku Regional Bureau Ministry Of Land Infrastructure & Transport | Non-powered automatic erecting/falling gate using change in water level of weir or the like |
| CN1558041A (en) * | 2004-01-19 | 2004-12-29 | 徐小群 | Double-lifting-point four-sensor load limiting controller |
| CN101329381A (en) * | 2008-07-28 | 2008-12-24 | 庞元俊 | Method for detecting short circuit fault with current change rate |
| CN201226099Y (en) * | 2008-06-17 | 2009-04-22 | 四川中鼎自动控制有限公司 | Control instrument for turning on sluice |
| CN201548831U (en) * | 2009-12-10 | 2010-08-11 | 山东金现代信息技术有限公司 | Gate control box |
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2012
- 2012-11-05 CN CN2012104354256A patent/CN102888827A/en active Pending
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| CN1059429A (en) * | 1990-08-30 | 1992-03-11 | 西屋电气公司 | Overcurrent trip circuit |
| JP2004218409A (en) * | 2003-01-16 | 2004-08-05 | Tohoku Regional Bureau Ministry Of Land Infrastructure & Transport | Non-powered automatic erecting/falling gate using change in water level of weir or the like |
| CN1558041A (en) * | 2004-01-19 | 2004-12-29 | 徐小群 | Double-lifting-point four-sensor load limiting controller |
| CN201226099Y (en) * | 2008-06-17 | 2009-04-22 | 四川中鼎自动控制有限公司 | Control instrument for turning on sluice |
| CN101329381A (en) * | 2008-07-28 | 2008-12-24 | 庞元俊 | Method for detecting short circuit fault with current change rate |
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| 刘彦良等: "大黑汀水库闸门自动监控***", 《水电自动化与大坝监测》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635571A (en) * | 2014-12-09 | 2015-05-20 | 合肥三立自动化工程有限公司 | Remote gate control system and remote gate control method |
| CN105442500A (en) * | 2015-11-06 | 2016-03-30 | 三峡大学 | Inflatable type hydropower station ecological tail gate and operation method |
| CN107677909A (en) * | 2017-10-27 | 2018-02-09 | 武汉圣禹排水***有限公司 | Current limliting gate and sewage treatment well and detecting method with fault detection system |
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Application publication date: 20130123 |